“The Cossack” by L. Ron Hubbard
Publication date: June 1935
Original publication: Mystery Adventures
Genre: Action & Adventure
Story description: A confrontation between Colonel Komroff and the pre-revolutionary Russian Duchess of Novgrod, whose sexual advances he had spurned, ends in violent deaths.
Currently available as part of the Stories from the Golden Age series, in the title Yukon Madness.